Combined assembly type caisson structure adopting high-strength bolt connection

Abstract

The application discloses a combined assembly type sinking well structure connected by high-strength bolts, which comprises bottom-layer blade-angle-layer ring pieces, a plurality of the bottom-layer blade-angle-layer ring pieces being spliced into a cylindrical structure, height splicing layers, the height splicing layers being installed at top ends of the bottom-layer blade-angle-layer ring pieces, a plurality of the height splicing layers being spliced into a cylindrical structure, water chambers, the water chambers being located in the height splicing layers, and deviation-correcting clamping assemblies, the deviation-correcting clamping assemblies being installed at bottom ends of the height splicing layers and being communicated with the water chambers, and top ends of the bottom-layer blade-angle-layer ring pieces being provided with clamping tables matched with the deviation-correcting clamping assemblies, wherein the adjacent bottom-layer blade-angle-layer ring pieces, the adjacent height splicing layers and the bottom-layer blade-angle-layer ring pieces and the height splicing layers are connected by bolts.

Description

Technical Field

[0001] This invention relates to the field of caisson technology, and more specifically, to a combined assembled caisson structure using high-strength bolt connections. Background Technology

[0002] A caisson is a cylindrical structure. It is constructed by excavating soil inside the caisson, relying on its own weight to overcome the frictional resistance of the caisson wall, and sinking it to the design elevation. Then, the bottom is sealed with concrete and the pipe joints are filled and sealed, making it a working caisson or receiving caisson for pipe jacking. It is mostly used in urban rainwater and sewage diversion projects. It is constructed using a trenchless pipe jacking process to avoid causing congestion on urban roads and alleviate traffic pressure.

[0003] Modern caissons are mostly constructed by pouring concrete and then transporting it to the site for construction. Their dimensions and volume are standardized. During on-site assembly, uneven soil texture can cause the caisson to tilt. Correction is necessary in such cases. Initial correction methods involve removing soil to increase downward resistance on the lower side of the caisson, gradually correcting the tilt as it sinks. Later correction methods involve applying weight to the higher side of the caisson, ideally using steel ingots or cast iron blocks, to increase the sinking distance on that side and thus correct the tilt. Both methods require manual labor and spare parts, making them relatively complex. Summary of the Invention

[0004] To achieve the above objectives, this invention discloses a combined prefabricated caisson structure using high-strength bolt connections, comprising: A bottom edge layer ring sheet, and multiple bottom edge layer ring sheets are spliced ​​together to form a cylindrical structure; A high-splitting layer is installed on the top of the bottom edge layer ring plate, and multiple high-splitting layers are spliced ​​together to form a cylindrical structure; Water chamber, which is located within the height splicing layer; A self-correcting snap-fit ​​assembly is installed at the bottom of the height splicing layer and connected to the water chamber. A snap-fit ​​platform adapted to the self-correcting snap-fit ​​assembly is installed at the top of the bottom edge layer ring plate. The adjacent bottom edge layer rings, adjacent height splicing layers, and bottom edge layer rings and height splicing layers are all connected by bolts.

[0005] Preferably, the bolt is designed with an arc-shaped structure to fit the inner curvature of the caisson.

[0006] Preferably, the bottom edge layer ring is provided with a pipe connection limiting hole.

[0007] Preferably, adjacent bottom edge layer rings are connected by snap-fit ​​joints, and between bottom edge layer rings and high splicing layers.

[0008] Preferably, the top of the high-layer splicing layer is equipped with a water inlet and a water outlet connected to the water chamber.

[0009] Preferably, the correctable snap-fit ​​assembly includes: A lifting frame, which is horizontally located near the bottom of the water chamber; Vertical chutes are formed opposite to each other on the inner wall of the water chamber; The slider is slidably connected within a vertical groove and connected to the lifting frame; A float, which is installed inside the lifting frame; A bottom mounting groove is provided at the bottom end of the height splicing layer, and the bottom end of the water chamber is located inside the bottom mounting groove. A waterproof casing, which is fixedly installed at the bottom of the water chamber; An outer rotating ring seat is embedded and installed at the bottom end of the water chamber; The claw assembly is rotatably installed inside the outer rotating ring seat and is connected to the lifting frame through a waterproof shell. The claw assembly includes four claws, and the four claws are arrayed and locked on the clamping platform.

[0010] Preferably, the top of the bottom edge layer ring is provided with a top mounting groove, the top mounting groove is connected to the bottom mounting groove, the card platform is installed in the top mounting groove, the top of the card platform protrudes from the opening end of the top mounting groove, and multiple limiting protrusions are installed at intervals on the top of the bottom edge layer ring, with removable wooden strips placed between adjacent limiting protrusions.

[0011] Preferably, the claw assembly includes: A central shaft, the top end of which is installed at the bottom end of the lifting frame, and the bottom end of which extends into the waterproof shell; Two transmission gear blocks are mounted opposite each other on the side end of the central shaft, and racks are mounted opposite each other on the transmission gear blocks; An inner rotating ring is rotatably mounted on the inner ring end of the outer rotating ring seat; The bottom mounting brackets are mounted opposite each other at the bottom end of the inner rotating ring. Each bottom mounting bracket has an incomplete gear that meshes with the rack. The pawl is connected to the incomplete gear. A limit rod is installed in the middle of the bottom mounting bracket. A limit vertical groove is opened on the limit transmission tooth block. The limit rod is slidably connected in the limit vertical groove.

[0012] Preferably, a rotating gear ring is installed on the central rotating shaft, and a lower rotating shaft is installed at the bottom of the lifting frame. A pulley and an outer rotating gear are coaxially installed on the lower rotating shaft. The outer rotating gear meshes with the rotating gear ring. The pull rope is wound around the pulley, and both ends extend out of the inner wall of the height splicing layer.

[0013] Preferably, perforations are provided between adjacent bottom edge layer rings, between adjacent height splicing layers, and between bottom edge layer rings and height splicing layers to facilitate bolt insertion. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is an external view of the present invention; Figure 2 This is a schematic diagram of the splicing of the bottom edge layer ring and the height splicing layer of the present invention; Figure 3 This is a schematic diagram of the locking state of the correctable snap-fit ​​component of the present invention; Figure 4 This is a schematic diagram of the unlocked state of the corrective snap-fit ​​component of the present invention; Figure 5 This is a schematic diagram of the corrective snap-fit ​​assembly of the present invention before disassembly. Figure 6 This is a diagram showing the bolt outline of the present invention; Figure 7 This is a schematic diagram of the top structure of the bottom edge layer ring plate of the present invention.

[0016] In the diagram: 10. Bottom edge layer ring plate; 11. Height splicing layer; 12. Water chamber; 13. Card platform; 14. Bolt; 15. Lifting frame; 16. Slider; 17. Bottom mounting groove; 18. Waterproof shell; 19. Outer rotating ring seat; 21. Claw; 22. Top mounting groove; 23. Central shaft; 24. Transmission gear block; 25. Rack; 26. Inner rotating ring; 27. Bottom mounting bracket; 28. Incomplete gear; 29. ​​Limiting vertical groove; 20. Rotating gear ring; 31. Pulley; 32. Outer rotating gear; 33. Perforation; 34. Limiting protrusion; 35. Wooden strip; 36. Limiting rod. Detailed Implementation

[0017] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example The present invention will now be further described with reference to the accompanying drawings.

[0019] like Figures 1 to 7 As shown in the figure, this embodiment provides a combined prefabricated caisson structure using high-strength bolt connections, comprising: A bottom edge layer ring 10, and multiple bottom edge layer rings 10 are spliced ​​together to form a cylindrical structure; A height splicing layer 11 is installed on the top of the bottom edge layer ring 10, and multiple height splicing layers 11 are spliced ​​into a cylindrical structure. Water chamber 12, which is located within the height splicing layer 11; A self-correcting snap-fit ​​assembly is installed at the bottom of the height splicing layer 11 and connected to the water chamber 12. A snap-fit ​​platform 13 adapted to the self-correcting snap-fit ​​assembly is installed at the top of the bottom edge layer ring plate 10. The adjacent bottom edge layer rings 10, the adjacent height splicing layers 11, and the bottom edge layer rings 10 and the height splicing layers 11 are all connected by bolts 14.

[0020] The working principle and beneficial effects of the above technical solution are as follows: This invention discloses a modular prefabricated caisson structure using high-strength bolt connections. It comprises a bottom edge-angle layer ring 10 and a height splicing layer 11. The bottom layer is formed into a cylindrical structure by splicing multiple bottom edge-angle layer rings 10. A height splicing layer 11 is then spliced ​​to the top of each bottom edge-angle layer ring 10. Each height splicing layer 11 is hoisted above the bottom edge-angle layer ring 10. After lowering the height splicing layer 11 and aligning the self-correcting locking assembly with the locking platform 13, water is injected into the water chamber 12. The self-correcting locking assembly then engages and locks onto the locking platform 13. Next, the height splicing layer 11 is adjusted so that its inner wall is coplanar with the inner wall of the bottom edge-angle layer ring 10. The height splicing layer 11 is then lowered, thereby securing the self-correcting locking assembly onto the locking platform 13. Bolts 14 are used to fix adjacent bottom edge-angle layer rings 10, adjacent height splicing layers 11, and the relationship between the bottom edge-angle layer rings 10 and the height splicing layer 11. When the caisson experiences settlement deviation, water is continuously injected into the water chamber 12 on the higher side of the caisson to increase its self-weight and increase the settlement amount on the higher side, thereby correcting the caisson's tilt. This invention provides a modular caisson structure using high-strength bolt connections. A water chamber 12 is provided within the height splicing layer 11. By injecting water into the water chamber 12, the self-weight of the height splicing layer 11 is changed, thus easily altering the caisson's settlement amount.

[0021] In one embodiment, the bolt 14 is designed with an arc shape to accommodate the inner curvature of the caisson.

[0022] In one embodiment, the bottom edge layer annular plate 10 is provided with a pipe connection limiting hole.

[0023] In one embodiment, adjacent bottom edge layer rings 10 are connected by snap-fit ​​joints, and the bottom edge layer rings 10 and the height splicing layer 11 are connected by snap-fit ​​joints.

[0024] The beneficial effects of the above technical solution are as follows: the adjacent bottom edge layer ring pieces 10 and the bottom edge layer ring pieces 10 and the height splicing layer 11 are connected by a snap-fit ​​method to improve the connection stability between adjacent bottom edge layer ring pieces 10 and between the bottom edge layer ring pieces 10 and the height splicing layer 11.

[0025] In one embodiment, the top of the high-layer splicing layer 11 is equipped with a water inlet and a water outlet that communicate with the water chamber 12.

[0026] The working principle and beneficial effects of the above technical solution are as follows: The placement of the water inlet and outlet facilitates the filling or removal of water into the water chamber 12, thereby changing the weight of the high-layer splicing layer 11.

[0027] In one example, the correctable snap-fit ​​component includes: The lifting frame 15 is horizontally located inside the water chamber 12 near the bottom. Vertical chutes are formed on the inner wall of the water chamber 12, facing each other. Slider 16, which is slidably connected in the vertical groove and connected to the lifting frame 15; A float, which is installed inside the lifting frame 15; A bottom mounting groove 17 is provided at the bottom end of the height splicing layer 11, and the bottom end of the water chamber 12 is located inside the bottom mounting groove 17. Waterproof shell 18, which is fixedly installed at the bottom of the water chamber 12; An outer rotating ring seat 19 is embedded in the bottom end of the water chamber 12; The claw assembly is rotatably installed inside the outer rotating ring seat 19 and is connected to the lifting frame 15 through a waterproof shell 18. The claw assembly includes four claws 21, which are arrayed and locked onto the card platform 13.

[0028] The bottom edge layer ring plate 10 has a top mounting groove 22 at its top end, which is connected to the bottom mounting groove 17. The locking platform 13 is installed in the top mounting groove 22, and the top end of the locking platform 13 protrudes from the opening end of the top mounting groove 22. Multiple limiting protrusions 34 are installed at intervals on the top end of the bottom edge layer ring plate 10, and removable wooden strips 35 are placed between adjacent limiting protrusions 34.

[0029] The working principle and beneficial effects of the above technical solution are as follows: The height splicing layer 11 is hoisted above the bottom edge layer ring 10. After lowering the height splicing layer 11 and aligning the self-correcting locking assembly with the locking platform 13, a removable wooden strip 35 is placed between adjacent limiting protrusions 34 to prevent the height splicing layer 11 from engaging with the limiting protrusions 34, facilitating its rotation later. Next, water is poured into the water chamber 12. Under the buoyancy of the water, the float moves the lifting frame 15 to the bottom of the water chamber 12. The lifting frame 15 moves the slider 16 along the vertical groove, thereby engaging the claw assembly connected to the lifting frame 15. The four claws 21 work synchronously and lock onto the locking platform 13. The height splicing layer 11 is then adjusted, rotating around the locking platform 13. When the inner wall of the height splicing layer 11 is coplanar with the inner wall of the bottom edge layer ring 10, the wooden strip 35 is removed. After the wooden strip 35 is removed from its limit position, the float moves the lifting frame 15 to continue floating upwards at the bottom of the water chamber 12. The four claws 21 continue to close on the mounting platform 13, thus providing a downward pulling force to the height splicing layer 11. This provides a downward guiding force to the height splicing layer 11 when it is lowered. The bottom end of the height splicing layer 11 is locked onto the limiting protrusion 34. Compared to the traditional method where the limiting protrusion 34 and the bottom end of the height splicing layer 11 need to be completely aligned before the height splicing layer 11 and the bottom edge ring 10 can be spliced, now only the claw assembly needs to be inserted into the top mounting groove 22, and the four claws 21 will simultaneously close and align with the mounting platform 13. Then, only the height splicing layer 11 needs to be rotated so that the inner wall of the height splicing layer 11 is coplanar with the inner wall of the bottom edge ring 10 before it can be lowered. This changes the "line contact" to "point contact", improving the splicing efficiency.

[0030] In one embodiment, the claw assembly includes: a central shaft 23, the top end of which is mounted on the bottom end of the lifting frame 15, and the bottom end of which extends into the waterproof shell 18; Two transmission gear blocks 24 are mounted opposite each other on the side end of the central shaft 23, and racks 25 are mounted opposite each other on the transmission gear blocks 24; Inner rotating ring 26, which is rotatably mounted on the inner ring end of outer rotating ring seat 19; Two bottom mounting brackets 27 are mounted opposite each other at the bottom end of the inner rotating ring 26. Each bottom mounting bracket 27 has an incomplete gear 28 that meshes with the rack 25. The pawl 21 is connected to the incomplete gear 28. A limit rod 36 is installed in the middle of the bottom mounting bracket 27. A limit vertical groove 29 is opened on the limit transmission gear block 24. The limit rod 36 is slidably connected in the limit vertical groove 29.

[0031] The working principle and beneficial effects of the above technical solution are as follows: Water is poured into the water chamber 12. Under the buoyancy of the water, the float causes the lifting frame 15 to rise from the bottom of the water chamber 12. The lifting frame 15 causes the slider 16 to rise along the vertical slide groove, which in turn causes the central shaft 23 connected to the lifting frame 15 to rise. The central shaft 23 causes the two transmission gear blocks 24 located in the waterproof shell 18 to rise. The two racks 25 mounted on the opposing transmission gear ring 24 cause the incomplete gear 28 meshing with it to rotate towards the transmission gear blocks 24. This, in turn, causes the pawls 21 mounted on the incomplete gear 28 to rotate towards the transmission gear blocks 24. The four pawls 21 achieve synchronous closing action and are locked onto the locking platform 13. Next, the height splicing layer 11 is adjusted. The height splicing layer 11 drives the water chamber 12 and the outer rotating ring seat 19 installed at the bottom of the water chamber 12 to rotate on the inner rotating ring 26 with the locking platform 13 as the center. When the inner wall of the height splicing layer 11 is coplanar with the inner wall of the bottom edge layer ring plate 10, the wooden strip 35 is pulled out. After the wooden strip 35 is no longer limited, the float drives the lifting frame 15 to continue to float up at the bottom of the water chamber 12. The four claws 21 continue to close on the locking platform 13, thus giving the height splicing layer 11 a downward pulling force. In this way, when the height splicing layer 11 is lowered, it is given a downward guiding force. The bottom end of the height splicing layer 11 is locked on the limiting protrusion 34.

[0032] In one embodiment, a rotating gear ring 20 is installed on the central rotating shaft 23, and a lower rotating shaft is installed at the bottom of the lifting frame 15. A pulley 31 and an outer rotating gear 32 are coaxially installed on the lower rotating shaft. The outer rotating gear 32 meshes with the rotating gear ring 20. A pull rope is wound around the pulley 31, and both ends extend out of the inner wall of the height splicing layer 11.

[0033] The working principle and beneficial effects of the above technical solution are as follows: During the hoisting of the height splicing layer 11, the layer 11 is gradually lowered, and the claws 21 exposed at the bottom mounting groove 17 are inserted into the top mounting groove 22. Water is poured into the water chamber 12, and the four claws 21 simultaneously close and lock onto the mounting platform 13. Then, simply pulling the two ends of the pull rope manually will drive the pulley 31 to rotate, thereby driving the external rotating gear 32, which is coaxially mounted on the lower rotating shaft with the pulley 31, to rotate. Since the four claws 21 are locked onto the mounting platform 13 and do not move, the incomplete gear 2 connected to the claws 21... 8. The base mounting bracket 27 for the incomplete gear 28 is not in operation, and the inner rotating ring 26 for the base mounting bracket 27 is not in operation. The outer rotating gear 32 rotates around the rotating gear ring 20, which in turn drives the lifting frame 15 connected to the outer rotating gear 32 to rotate at the top of the central shaft 23. The lifting frame 15 drives the water chamber 12 and the outer rotating ring seat 19 connected to the bottom of the water chamber 12 to rotate on the inner rotating ring 26 around the card platform 13. In this way, the height splicing layer 11 can be flipped by simply pulling the rope with the left and right hands without the need for external tools.

[0034] In one embodiment, through holes 33 are provided between adjacent bottom edge layer rings 10, between adjacent height splicing layers 11, and between the bottom edge layer rings 10 and the height splicing layers 11 to facilitate the insertion of bolts 14.

[0035] The working principle and beneficial effects of the above technical solution are as follows: By inserting bolts 14 into the through holes 33 between adjacent bottom edge layer rings 10, between adjacent height splicing layers 11, and between the bottom edge layer rings 10 and the height splicing layers 11, the fixing between adjacent bottom edge layer rings 10, between adjacent height splicing layers 11, and between the bottom edge layer rings 10 and the height splicing layers 11 can be completed.

[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A modular prefabricated caisson structure using high-strength bolt connections, characterized in that, include: The bottom edge layer ring (10) and the height splicing layer (11) are assembled into a cylindrical structure. The height splicing layer (11) is installed on the top of the bottom edge layer ring (10). The water chamber (12) is located inside the height splicing layer (11). The corrective snap-fit ​​assembly is installed at the bottom of the height splicing layer (11) and connected to the water chamber (12). The top of the bottom edge layer ring (10) is equipped with a snap-fit ​​platform (13) that is compatible with the corrective snap-fit ​​assembly. Among them, the adjacent bottom edge layer rings (10), the adjacent height splicing layers (11), and the bottom edge layer rings (10) and the height splicing layers (11) are all connected by bolts (14); The corrective snap-fit ​​assembly includes: a lifting frame (15), which is horizontally located in the water chamber (12) near the bottom. Vertical sliding grooves are opened opposite each other on the inner wall of the water chamber (12). A slider (16) is slidably connected in the vertical sliding groove and connected to the lifting frame (15). A float is installed in the lifting frame (15). A bottom mounting groove (17) is opened at the bottom of the height splicing layer (11). The bottom of the water chamber (12) is located in the bottom mounting groove (17). A waterproof shell (18) is fixedly installed at the bottom of the water chamber (12). An outer rotating ring seat (19) is embedded in the bottom of the water chamber (12). A claw assembly is rotatably installed in the outer rotating ring seat (19) and passes through the waterproof shell (18) and is connected to the lifting frame (15). The claw assembly includes four claws (21). The four claws (21) are arrayed and snapped on the card platform (13). The chuck assembly includes: a central shaft (23), the top of which is mounted on the bottom of the lifting frame (15), the bottom of which extends into the waterproof shell (18), two transmission gear blocks (24) mounted opposite each other on the side of the central shaft (23), a rack (25) mounted opposite each other on the transmission gear blocks (24), an inner rotating ring (26) rotatably mounted on the inner ring end of the outer rotating ring seat (19), two bottom mounting brackets (27) mounted opposite each other on the bottom end of the inner rotating ring (26), each bottom mounting bracket (27) having an incomplete gear (28) meshing with the rack (25) mounted opposite each other, a chuck (21) connected to the incomplete gear (28), a limit rod (36) mounted in the middle of the bottom mounting bracket (27), a limit vertical groove (29) opened on the transmission gear block (24), and the limit rod (36) slidably connected in the limit vertical groove (29).

2. The prefabricated caisson structure using high-strength bolt connections according to claim 1, characterized in that, The bolt (14) is designed with an arc shape to fit the inner curvature of the caisson.

3. The prefabricated caisson structure using high-strength bolt connections according to claim 1, characterized in that, The bottom edge layer ring plate (10) is provided with a pipe connection limiting hole.

4. A prefabricated caisson structure using high-strength bolt connections according to claim 1, characterized in that, The adjacent bottom edge layer rings (10) are connected by snap-fit. The bottom edge layer rings (10) and the height splicing layer (11) are connected by snap-fit.

5. A prefabricated caisson structure using high-strength bolt connections according to claim 1, characterized in that, The top of the high splicing layer (11) is equipped with a water inlet and a water outlet connected to the water chamber (12).

6. A prefabricated caisson structure using high-strength bolt connections according to claim 1, characterized in that, The bottom edge layer ring plate (10) has a top mounting groove (22) at the top. The top mounting groove (22) is connected to the bottom mounting groove (17). The mounting plate (13) is installed in the top mounting groove (22). The top of the mounting plate (13) protrudes from the groove end of the top mounting groove (22). Multiple limiting protrusions (34) are installed at intervals on the top of the bottom edge layer ring plate (10). A removable wooden strip (35) is placed between adjacent limiting protrusions (34).

7. A prefabricated caisson structure using high-strength bolt connections according to claim 1, characterized in that, A rotating gear ring (20) is installed on the central shaft (23). A lower rotating shaft is installed at the bottom of the lifting frame (15). A pulley (31) and an outer rotating gear (32) are coaxially installed on the lower rotating shaft. The outer rotating gear (32) meshes with the rotating gear ring (20). The pull rope is wound around the pulley (31) and both ends extend out of the inner wall of the height splicing layer (11).

8. A prefabricated caisson structure using high-strength bolt connections according to claim 1, characterized in that, A through hole (33) is provided between adjacent bottom edge layer rings (10), between adjacent height splicing layers (11), and between the bottom edge layer rings (10) and the height splicing layer (11) to facilitate the insertion of bolts (14).

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